public void GenerateAesKeyTest(AesKeySize keySize)
{
AesKeyInfo encryptionKeyInfo = AesProvider.GenerateKey(keySize);
Assert.NotNull(encryptionKeyInfo.Key);
Assert.NotNull(encryptionKeyInfo.IV);
Assert.Equal((int)keySize / 8, encryptionKeyInfo.Key.Length);
}
private void ExecuteAesEncryptionTest <TContext>(AesKeySize aesKeyType) where TContext : DatabaseContext
{
AesKeyInfo encryptionKeyInfo = AesProvider.GenerateKey(aesKeyType);
var provider = new AesProvider(encryptionKeyInfo.Key, encryptionKeyInfo.IV, CipherMode.CBC, PaddingMode.Zeros);
var author = new AuthorEntity("John", "Doe", 42)
{
Books = new List <BookEntity>()
{
new BookEntity("Lorem Ipsum", 300),
new BookEntity("Dolor sit amet", 390)
}
};
string authorEncryptedFirstName = provider.Encrypt(author.FirstName);
string authorEncryptedLastName = provider.Encrypt(author.LastName);
string firstBookEncryptedName = provider.Encrypt(author.Books.First().Name);
string lastBookEncryptedName = provider.Encrypt(author.Books.Last().Name);
using (var contextFactory = new DatabaseContextFactory())
{
// Save data to an encrypted database context
using (var dbContext = contextFactory.CreateContext <TContext>(provider))
{
dbContext.Authors.Add(author);
dbContext.SaveChanges();
}
// Read encrypted data from normal context and compare with encrypted data.
using (var dbContext = contextFactory.CreateContext <DatabaseContext>())
{
var authorFromDb = dbContext.Authors.Include(x => x.Books).FirstOrDefault();
Assert.NotNull(authorFromDb);
Assert.Equal(authorEncryptedFirstName, authorFromDb.FirstName);
Assert.Equal(authorEncryptedLastName, authorFromDb.LastName);
Assert.NotNull(authorFromDb.Books);
Assert.NotEmpty(authorFromDb.Books);
Assert.Equal(2, authorFromDb.Books.Count);
Assert.Equal(firstBookEncryptedName, authorFromDb.Books.First().Name);
Assert.Equal(lastBookEncryptedName, authorFromDb.Books.Last().Name);
}
// Read decrypted data and compare with original data
using (var dbContext = contextFactory.CreateContext <TContext>(provider))
{
var authorFromDb = dbContext.Authors.Include(x => x.Books).FirstOrDefault();
Assert.NotNull(authorFromDb);
Assert.Equal(author.FirstName, authorFromDb.FirstName);
Assert.Equal(author.LastName, authorFromDb.LastName);
Assert.NotNull(authorFromDb.Books);
Assert.NotEmpty(authorFromDb.Books);
Assert.Equal(2, authorFromDb.Books.Count);
Assert.Equal(author.Books.First().Name, authorFromDb.Books.First().Name);
Assert.Equal(author.Books.Last().Name, authorFromDb.Books.Last().Name);
}
}
}
public void EncryptDecryptByteArrayTest(AesKeySize keySize)
{
byte[] input = DataHelper.RandomBytes(20);
AesKeyInfo encryptionKeyInfo = AesProvider.GenerateKey(keySize);
var provider = new AesProvider(encryptionKeyInfo.Key);
byte[] encryptedData = provider.Encrypt(input, b => b, StandardConverters.StreamToBytes);
Assert.NotNull(encryptedData);
byte[] decryptedData = provider.Decrypt(encryptedData, b => b, StandardConverters.StreamToBytes);
Assert.NotNull(decryptedData);
Assert.Equal(input, decryptedData);
}
public void CompareTwoAesKeysInstancesTest(AesKeySize keySize)
{
AesKeyInfo encryptionKeyInfo1 = AesProvider.GenerateKey(keySize);
AesKeyInfo encryptionKeyInfo2 = AesProvider.GenerateKey(keySize);
AesKeyInfo encryptionKeyInfoCopy = encryptionKeyInfo1;
Assert.NotNull(encryptionKeyInfo1.Key);
Assert.NotNull(encryptionKeyInfo1.IV);
Assert.NotNull(encryptionKeyInfo2.Key);
Assert.NotNull(encryptionKeyInfo2.IV);
Assert.True(encryptionKeyInfo1 == encryptionKeyInfoCopy);
Assert.True(encryptionKeyInfo1.Equals(encryptionKeyInfoCopy));
Assert.True(encryptionKeyInfo1 != encryptionKeyInfo2);
Assert.True(encryptionKeyInfo1.GetHashCode() != encryptionKeyInfo2.GetHashCode());
Assert.False(encryptionKeyInfo1.Equals(0));
}
public void EncryptDecryptStringTest(AesKeySize keySize)
{
string input = StringHelper.RandomString(20);
AesKeyInfo encryptionKeyInfo = AesProvider.GenerateKey(keySize);
var provider = new AesProvider(encryptionKeyInfo.Key);
string encryptedData = provider.Encrypt(input);
Assert.NotNull(encryptedData);
string decryptedData = provider.Decrypt(encryptedData);
Assert.NotNull(decryptedData);
Assert.Equal(input, decryptedData);
}
public void EncryptDecryptStringTest(AesKeySize keySize)
{
string input = DataHelper.RandomString(20);
AesKeyInfo encryptionKeyInfo = AesProvider.GenerateKey(keySize);
var provider = new AesProvider(encryptionKeyInfo.Key);
string encryptedData = provider.Encrypt(input, Encoding.UTF8.GetBytes, StandardConverters.StreamToBase64String);
Assert.NotNull(encryptedData);
string decryptedData = provider.Decrypt(encryptedData, Convert.FromBase64String, StandardConverters.StreamToString);
Assert.NotNull(decryptedData);
Assert.Equal(input, decryptedData);
}
private static void ExecuteAesEncryptionTest <TContext>(AesKeySize aesKeyType) where TContext : DatabaseContext
{
AesKeyInfo encryptionKeyInfo = AesProvider.GenerateKey(aesKeyType);
var provider = new AesProvider(encryptionKeyInfo.Key, CipherMode.CBC, PaddingMode.Zeros);
var author = new AuthorEntity("John", "Doe", 42)
{
Password = DataHelper.RandomSecureString(10),
Books = new List <BookEntity>
{
new("Lorem Ipsum", 300),
new("Dolor sit amet", 390)
}
};
using var contextFactory = new DatabaseContextFactory();
// Save data to an encrypted database context
using (var dbContext = contextFactory.CreateContext <TContext>(provider))
{
dbContext.Authors.Add(author);
dbContext.SaveChanges();
}
// Read decrypted data and compare with original data
using (var dbContext = contextFactory.CreateContext <TContext>(provider))
{
var authorFromDb = dbContext.Authors.Include(x => x.Books).FirstOrDefault();
Assert.NotNull(authorFromDb);
Assert.Equal(author.FirstName, authorFromDb.FirstName);
Assert.Equal(author.LastName, authorFromDb.LastName);
Assert.NotNull(authorFromDb.Books);
Assert.NotEmpty(authorFromDb.Books);
Assert.Equal(2, authorFromDb.Books.Count);
Assert.Equal(author.Books.First().Name, authorFromDb.Books.First().Name);
Assert.Equal(author.Books.Last().Name, authorFromDb.Books.Last().Name);
}
}
public UserDbContext(DbContextOptions options) : base(options)
{
_encryptionInfo = AesProvider.GenerateKey(AesKeySize.AES128Bits);
_provider = new AesProvider(_encryptionInfo.Key, _encryptionInfo.IV);
}
